Unit Ratios

Find the unit rate.
72 miles every 4 hours

• 36 m.p.h.

• 72 m.p.h.

• 288 m.p.h.

• 18 m.p.h.

A box of cereal cost $3.59 for 30 oz. How much is the unit rate per ounce? Round to the nearest cent.

• 11 cents

• 12 cents

• 13 cents

• 10 cents

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

• $8 per pound

• $5 per pound

• $35 per pound

• 0.125 pounds per dollar

If the ratio of boys to girls in a class is 3:4, how many boys are there if there are 20 girls?

• 15

• 25

• 10

• 30

What is a Ratio?

• a comparison of two quantities

• it is when the only factor that the numerator and denominator share is one

• a rate when the denominator is one

• two random numbers

A scale drawing of a park has a scale of 1 inch : 100 feet. If the actual length of the park is 300 feet, how long is it on the drawing?

• 2 inches

• 3 inches

• 4 inches

• 5 inches

What is a Ratio?

• Is a comparison of two quantities

• A rate with a denominator of one

• It is when the only factor the numerator and denominator share is a one

• Two decimals that can be multiplied

What is a Ratio?

• Is a comparison of two quantities 

• To multiply two fractions 

• A number over another number

• Two decimals that can be multiplied

A unit rate is a ratio in which the second quantity is 1.

• True

• False

What is the ratio of 30 minutes to 2 hours in simplest form?